Exhaust treatment device

ABSTRACT

An exhaust treatment device is fixed to the exhaust end of an exhaust pipe of an automotive vehicle to treat exhaust emitted by the exhaust pipe. The device of the present invention can be used in addition to any other exhaust treatment devices associated with the automotive engine.

BACKGROUND OF THE INVENTION

1. Field of the Invention.

The present invention relates to the general art of automotive vehicles, and to the particular field of exhaust treatment devices for automotive vehicles.

2. Discussion of the Related Art.

As more and more automotive vehicles are found on the roads, air pollution becomes a greater problem. In many areas, very strict emission limits are placed on automotive vehicles. This has led to the development of alternative energy source vehicles, and the like. However, many of these solutions are not yet practical and are not yet fully commercially viable for many consumers.

Therefore, there is a need for an exhaust treatment device that can be used on presently-available automotive vehicles.

While exhaust gas treatment devices are well known in the art, most of these devices are located in the exhaust system and therefore must be installed by a skilled technician with the proper tools and equipment. This can be expensive and onerous for a vehicle owner.

Therefore, there is a need for an exhaust treatment device that can be easily installed on presently-available automotive vehicles.

Once installed, an exhaust treatment device should be cleaned or changed on a periodic basis. With presently-available devices, such maintenance may be difficult and/or expensive due to the location of the devices. This discourages automobile owners from carrying out proper maintenance of the exhaust treatment devices.

Therefore, there is a need for an exhaust treatment device for use on an automobile that can be easily maintained.

PRINCIPAL OBJECTS OF THE INVENTION

It is a main object of the present invention to provide an exhaust treatment device that can be used on presently-available automotive vehicles.

It is another object of the present invention to provide an exhaust treatment device that can be easily installed on presently-available automotive vehicles.

It is another object of the present invention to provide an exhaust treatment device for use on an automobile that can be easily maintained.

SUMMARY OF THE INVENTION

These, and other, objects are achieved by an exhaust treatment device that is adapted to be releasably attached to the exhaust end of an exhaust pipe of an automobile. The device includes a proximal end that has clamps that securely grip the exhaust pipe and a cylindrical filter medium that can be easily removed and replaced inside the device. Exhaust from the engine, even exhaust that has already been treated by other exhaust treatment devices associated with the engine, is further treated by the device of the present invention before the exhaust is emitted to the environment. This further aids in maintaining a clean environment.

Using the exhaust treatment device embodying the present invention will permit an existing vehicle to be retrofit to improve emissions associated with the vehicle. The device embodying the present invention can be easily installed on the exhaust end of an exhaust pipe associated with an automobile engine and thus is easy to install, even by a non-skilled person who does not have access to special equipment. Once installed, the device of the present invention is easily maintained and the filter media can be easily replaced without the need of special skills or special equipment.

BRIEF DESCRIPTION OF THE DRAWING FIGURES

FIG. 1 is a side elevational view of an exhaust treatment device embodying the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Other objects, features and advantages of the invention will become apparent from a consideration of the following detailed description and the accompanying drawings.

Referring to the Figure, it can be understood that the present invention is embodied in an exhaust treatment device 10 that will treat gases exhausted from an automotive vehicle and which is used in addition to any other exhaust treatment device used on the automotive vehicle. Exhaust treatment device 10 comprises a tailpipe 12 of an automotive vehicle V. Tailpipe 12 includes an exhaust end 16 and is fluidically connected to another exhaust treatment device, such as a catalytic converter 20 or the like, that is fluidically interposed between the engine of vehicle V and exhaust end 16 of the tailpipe 12.

Treatment device 10 further includes a filter unit 30 releasably mounted on the tailpipe 12 adjacent to the exhaust end 16 of the tailpipe 12. Filter unit 30 includes a cylindrical housing 32, which can be stainless steel, aluminum or any other suitable material. Housing 32 has a first end 34 which is a proximal end when the filter unit 30 is mounted on the tailpipe 12, a second end 36 which is a distal end when the filter unit 30 is mounted on the tailpipe 12, and a longitudinal axis 38 which extends between the first end 34 of the cylindrical housing 32 and the second end 36 of the cylindrical housing 32.

A bore 40 is defined through the cylindrical housing 32 in the direction of the longitudinal axis 38 and extends between the first end 34 of the cylindrical housing 32 and the second end 36 of the cylindrical housing 32. An internal surface 42 is located on the cylindrical housing 32 adjacent to the bore 40 and an outside surface 44 on the cylindrical housing 32.

A plurality of exhaust holes 46 are defined through the cylindrical housing 32 and are located adjacent to the second end 36 of the cylindrical housing 32.

A clamp unit 50 is located on the first end 34 of the cylindrical housing 32. The clamp unit 50 is sized and adapted to securely clamp the tailpipe 12 adjacent to the exhaust end 16 of the tailpipe 12 to mount the filter unit 30 onto the tailpipe 12 adjacent to the exhaust end 16 of the tailpipe 12. The exhaust end 16 of the tailpipe 12 is located inside the bore 40 of the cylindrical housing 32 when the filter unit 30 is mounted on the tailpipe 12.

Filter media 60 is located in the bore 40 of the cylindrical housing 32 between the first end 34 of the cylindrical housing 32 and the second end 36 of the cylindrical housing 32. The filter media 60 is adapted to treat exhaust from the tailpipe 12 and is located to be in fluid communication with the exhaust end 16 of the tailpipe 12 and with the exhaust holes 46 defined in the cylindrical housing 32 when the filter unit 30 is mounted on the tail pipe 12. Filter media 60 is of the type found in exhaust treatment devices, and thus will not be specifically discussed.

Any fluids being exhausted from the tailpipe 12 are thus further treated by device 10 to further aid in maintaining a clean environment. Device 10 is easily removed from the tailpipe 12 by simply releasing clamp unit 50. The housing 32 is easily opened, as by unscrewing one end thereof, the filter media 60 removed and replaced with a fresh media 60, the housing 32 re-closed and then replaced on the tailpipe 12. In this manner, fresh and effective filter media 60 are always available for device 10 and are easily placed in the device 10.

It is understood that while certain forms of the present invention have been illustrated and described herein, it is not to be limited to the specific forms or arrangements of parts described and shown. 

1. An exhaust treatment device comprising: a) a tailpipe of an automotive vehicle, said tailpipe including an exhaust end; and b) a filter unit releasably mounted on said tailpipe adjacent to the exhaust end of said tailpipe and which includes (1) a cylindrical housing having a first end which is a proximal end when said filter unit is mounted on said tailpipe, a second end which is a distal end when said filter unit is mounted on said tailpipe, a longitudinal axis which extends between the first end of the cylindrical housing and the second end of the cylindrical housing, a bore defined through the cylindrical housing in the direction of the longitudinal axis and which extends between the first end of the cylindrical housing and the second end of the cylindrical housing, an internal surface on the cylindrical housing adjacent to the bore, an outside surface on the cylindrical housing, a plurality of exhaust holes defined through the cylindrical housing and located adjacent to the second end of the cylindrical housing, (2) a clamp unit on the first end of the cylindrical housing, the clamp unit being sized and adapted to securely clamp said tailpipe adjacent to the exhaust end of said tailpipe, the exhaust end of said tailpipe being located inside the bore of the cylindrical housing when said filter unit is mounted on said tailpipe, and (3) filter media located in the bore of the cylindrical housing between the first end of the cylindrical housing and the second end of the cylindrical housing, the filter media being located to be in fluid communication with the exhaust end of said tailpipe and with the exhaust holes defined in the cylindrical housing when said filter unit is mounted on said tail pipe. 